![](https://www.nasa.gov/sites/default/files/thumbnails/image/pia20176_main.jpg)
This illustration shows Earth surrounded by theoretical filaments of dark matter called "hairs." via NASA https://ift.tt/2I15tH0
The blue tentacle-like arms containing gecko-like adhesive pads, attached to an Astrobee robotic free-flyer, reach out and grapple a "...
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